gmp_cmp() function in PHP

The gmp_cmp() function compares two GMP numbers.

Syntax

gmp_cmp(n1, n2)

Parameters

• n1 − The first GMP number. It can be GMP object in PHP version 5.6 and later. Can also be numeric strings.

• n2 − The second GMP number. It can be GMP object in PHP version 5.6 and later. Can also be numeric strings.

Return

• The gmp_cmp() function returns:

• 1 if first number is greater,
• -1 if second number is greater,
• 0 if both the numbers are equal

Example

The following is an example −

<?php
   $n1 = "32";
   $n2 = "32";  
   $cmpres = gmp_cmp($n1, $n2);
   echo $cmpres;
?>

Output

The following is the output −

0

Example

Let us see another example −

<?php
   $n1 = "25";
   $n2 = "30";
   $cmpres = gmp_cmp($n1, $n2);
   echo $cmpres;
?>

Output

The following is the output −

-1